{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,16]],"date-time":"2026-05-16T07:05:32Z","timestamp":1778915132576,"version":"3.51.4"},"reference-count":23,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2016,9,6]],"date-time":"2016-09-06T00:00:00Z","timestamp":1473120000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100014219","name":"National Science Fund for Distinguished Young Scholars","doi-asserted-by":"publisher","award":["51425801"],"award-info":[{"award-number":["51425801"]}],"id":[{"id":"10.13039\/501100014219","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["51278512, 51508058, 11404045"],"award-info":[{"award-number":["51278512, 51508058, 11404045"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Social livelihood science and technology innovation special of Chongqing","award":["cstc2015shmszx30012, cstc2015shmszx30029"],"award-info":[{"award-number":["cstc2015shmszx30012, cstc2015shmszx30029"]}]},{"name":"Science and Technology Project of Guizhou Provincial Transportation Department","award":["2016-123-006, 2016-123-039, 2016-123-040"],"award-info":[{"award-number":["2016-123-006, 2016-123-039, 2016-123-040"]}]},{"name":"Science and Technology Planning Project of Yunnan Province","award":["2014 (A) 27"],"award-info":[{"award-number":["2014 (A) 27"]}]},{"name":"Communications Science and Technology Project of Guangxi Province of China","award":["20144805"],"award-info":[{"award-number":["20144805"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>This paper presents a non-destructive test method for steel corrosion in reinforced concrete bridges by using a 3-dimensional digital micro-magnetic sensor to detect and analyze the self-magnetic field leakage from corroded reinforced concrete. The setup of the magnetic scanning device and the measurement mode of the micro-magnetic sensor are introduced. The numerical analysis model is also built based on the linear magnetic charge theory. Compared to the self-magnetic field leakage data obtained from magnetic sensor-based measurement and numerical calculation, it is shown that the curves of tangential magnetic field at different lift-off height all intersect near the edge of the steel corrosion zone. The result indicates that the intersection of magnetic field curves can be used to detect and evaluate the range of the inner steel corrosion in engineering structures. The findings of this work propose a new and effective non-destructive test method for steel corrosion, and therefore enlarge the application of the micro-magnetic sensor.<\/jats:p>","DOI":"10.3390\/s16091439","type":"journal-article","created":{"date-parts":[[2016,9,6]],"date-time":"2016-09-06T10:10:16Z","timestamp":1473156616000},"page":"1439","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":82,"title":["The Non-Destructive Test of Steel Corrosion in Reinforced Concrete Bridges Using a Micro-Magnetic Sensor"],"prefix":"10.3390","volume":"16","author":[{"given":"Hong","family":"Zhang","sequence":"first","affiliation":[{"name":"College of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Leng","family":"Liao","sequence":"additional","affiliation":[{"name":"School of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ruiqiang","family":"Zhao","sequence":"additional","affiliation":[{"name":"School of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1130-3600","authenticated-orcid":false,"given":"Jianting","family":"Zhou","sequence":"additional","affiliation":[{"name":"College of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mao","family":"Yang","sequence":"additional","affiliation":[{"name":"College of Civil Engineering, Chongqing Three Gorges University, Chongqing 404100, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Runchuan","family":"Xia","sequence":"additional","affiliation":[{"name":"College of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2016,9,6]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"647","DOI":"10.1016\/0010-938X(81)90015-9","article-title":"Determination of Corrosion Rates by Electrochemical DC and AC Methods","volume":"21","author":"Lorenz","year":"1981","journal-title":"Corros. 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